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Finding the Fourth Proportional to 8,459.42, 12,662.55 and 5,811.44

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Solution

The fourth proportional to 8,459.42, 12,662.55 and 5,811.44 is: 8,698.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.42 : 12,662.55 = 5,811.44 : x
  2. Step 2: Convert to fraction form
    8,459.42/12,662.55 = 5,811.44/x
  3. Step 3: Cross multiply
    8,459.42x = 12,662.55 × 5,811.44
  4. Step 4: Simplify right side
    8,459.42x = 73,587,586.26
  5. Step 5: Solve for x
    x = 73,587,586.26/8,459.42
  6. Step 6: Final answer
    x = 8,698.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.